Supplementary material from "Proteomic evidence of dietary sources in ancient dental calculus"
Posted on 2018-06-30 - 10:46
Archaeological dental calculus has emerged as a rich source of ancient biomolecules, including proteins. Previous analyses of proteins extracted from ancient dental calculus revealed the presence of the dietary milk protein β-lactoglobulin, providing direct evidence of dairy consumption in the archaeological record. However, the potential for calculus to preserve other food-related proteins has not yet been systematically explored. Here we analyse shotgun metaproteomic data from 100 archaeological dental calculus samples ranging from the Iron Age to the Post-Medieval period (eighth century BC–nineteenth century AD) in England, as well as 14 dental calculus samples from contemporary dental patients and recently deceased individuals, to characterize the range and extent of dietary proteins preserved in dental calculus. In addition to milk proteins, we detect proteomic evidence of foodstuffs such as cereals and plant products, as well as the digestive enzyme salivary amylase. We discuss the importance of optimized protein extraction methods, data analysis approaches and authentication strategies in the identification of dietary proteins from archaeological dental calculus. This study demonstrates that proteomic approaches can robustly identify foodstuffs in the archaeological record that are typically under-represented due to their poor macroscopic preservation.
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Hendy, Jessica; Warinner, Christina; Bouwman, Abigail; Collins, Matthew J.; Fiddyment, Sarah; Fischer, Roman; et al. (2018). Supplementary material from "Proteomic evidence of dietary sources in ancient dental calculus". The Royal Society. Collection. https://doi.org/10.6084/m9.figshare.c.4150424.v1
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AUTHORS (20)
JH
Jessica Hendy
CW
Christina Warinner
AB
Abigail Bouwman
MC
Matthew J. Collins
SF
Sarah Fiddyment
RF
Roman Fischer
RH
Richard Hagan
CA
Courtney A. Hofman
MH
Malin Holst
EC
Eros Chaves
LK
Lauren Klaus
GL
Greger Larson
MM
Meaghan Mackie
KM
Krista McGrath
AM
Amy Z. Mundorff
AR
Anita Radini
HR
Huiyun Rao
CT
Christian Trachsel
IM
Irina M. Velsko
CF
Camilla F. Speller